Kao Corporation

Toyomi Koike

Hiroshi Nagumo

Akira Yamamuro

Hiroki Sawada

Yukinaga Yokota

Akio Kimura

Hiroyuki Yamada

Manabu Tonomura

Kazunori Aizawa

Norio Nishikawa

Masaaki Iwahashi

A process is disclosed for the production of an alkyl glycoside stable in hue and odor, which comprises the steps of (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing a higher alcohol, (2) decoloring the alkyl glycoside reaction product with hydrogen peroxide, (3) contacting the decolored alkyl glycoside with a metal/hydrogen complex represented by formula (I)

Process for production of alkyl glycoside stable in hue and odor

A method for producing an alkylglycoside by a reaction of a saccharide and a monohydric alcohol, the method comprising the steps of carrying out the reaction of the saccharide and the monohydric alcohol; adjusting a reaction mixture containing an unreacted monohydric alcohol and an alkylglycoside produced to a pH of 2 to 6.5; and removing the unreacted monohydric alcohol from the reaction mixture by distillation to obtain the alkylglycoside, wherein decoloration treatment may be carried out before removing the unreacted monohydric alcohol.

Method for producing alkylglycoside

Alkyl glycoside aqueous solutions, which satisfy the following conditions (a) and/or (b):

Alkyl glycoside aqueous solution

Sulfonate compound process for producing the same, and bleach

A surfactant composition containing a fatty acid polyoxyalkylene lower alkyl ether represented by formula (1):

Foaming surfactant composition comprising fatty acid polyoxyalkylene

A process is described for the production of an alkyl glycoside which comprises distilling a higher alcohol in the presence of an alkaline substance, or washing a higher alcohol with an aqueous solution of an alkaline substance, and then reacting the higher alcohol with a sugar or a reaction product of a sugar and a lower alcohol. According to this process, an alkyl glycoside showing an excellent hue can be produced by repeatedly using unreacted alcohol recovered from the reaction mixture in the production of an alkyl glycoside.

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Wakayama, Japan

Toyomi Koike